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Right then, 2004 CTT:

The car runs fine and up- and downshifts in manual mode are fine.

Up- and downshifts in auto mode are fine as well, extremely smooth, but under heavy acceleration upshifts are HARD...

You can feel a hard 'jerk' as it bangs another one in...

No errormessages, no strange behaviour, car still runs fine but holy hell...

Is this normal? I would assume not but then again, no errors, running fine so...not a problem?

Any and all advice much appreciated!

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Hmm...I could change the fluid myself BUT I have no way of heating up the oil and checking level with a computer or something...

Can I just drain fluid, replace filter and fill with the ammount that drained out?

you can do that or you can measure the fluid temp with an IR gun or thermometer.

As for heating the fluid, you will do it the same way dealerships do it.....turn the car on and let the tranny warm up itself.

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